A train travels 600 km in 4 hours. what is the speed of the train?

Why can gamma rays pass threw or penetrate solids?

When the atoms electrones step down to lower energy levels in thin cloud of hot gas, what is produced?

Atoms that emit particles and energy from their nuclei are

A jet fighter flying at 300 m/s (just below the speed of sound) makes a turn of radius 2.25 km. (a) what is its centripetal acceleration in gs?

A SUV is towing a trailer and accelerating on a level road. The force that the SUV exerts on the trailer is

What is imperceptible human motion?

One liter of water at 56◦C is used to make iced tea. How much ice at 0 ◦C must be added to lower the temperature of the tea to 20 ◦C? The specific heat of water is 1 cal/g · ◦ C and latent heat of ice is 79.7 cal/g. Answer in units of g.

What. Is the acceleration of a racing car if it's speed is decreased uniformly from 66 m/sec to 44 m/sec over an 11 sec period

Write extensively on expansion of liquid and water. I will mark brainliest answer

A 100 kg train traveling at 20 m/s crashes into a stationary 400 kg car. After the collision the car and the train are stuck together. What is their velocity.